fix: re-generate types based on specifciation updates (GoogleChromeLabs#261)

Author: browser-automation-bot

out/index.d.ts

@@ -9,7 +9,7 @@ import * as BidiBluetooth from './gen/web-bluetooth.js';
 export * from './gen/main.js';
 export * from './gen/permissions.js';
 export * from './gen/web-bluetooth.js';
-export type {CommandMapping} from './gen/mapping.d.ts';
+export type {CommandMapping} from './gen/mapping.js';
 type ExternalSpecCommand<T> = {
   id: Bidi.JsUint;
 } & T;